| Place | Post Code |
|---|---|
| Bangaloko, Otto-Banza | None |
| Base, Otto-Banza | None |
| Bayon, Otto-Banza | None |
| Bira, Otto-Banza | None |
| Bogonda, Otto-Banza | None |
| Bolangu, Otto-Banza | None |
| Bongonda, Otto-Banza | None |
| Boso-Dula, Otto-Banza | None |
| Bosolanga, Otto-Banza | None |
| Bwamando, Otto-Banza | None |
| Bwamazunga, Otto-Banza | None |
| Bwambonu, Otto-Banza | None |
| Djumu, Otto-Banza | None |
| Gola, Otto-Banza | None |
| Gwi, Otto-Banza | None |
| Hama, Otto-Banza | None |
| Ike, Otto-Banza | None |
| Kawadje, Otto-Banza | None |
| Kulua-Loka, Otto-Banza | None |
| Lekabo, Otto-Banza | None |
| Maniko, Otto-Banza | None |
| Ndangu, Otto-Banza | None |
| Ngapo, Otto-Banza | None |
| Ngopo, Otto-Banza | None |
| Ovo, Otto-Banza | None |
| Pambwa, Otto-Banza | None |
| All postal codes in Mobayi-Mbon | |
|---|---|
| Mobayi-Mbongo, Mobayi-Mbon | |
| Otto-Banza, Mobayi-Mbon | |